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freebsd-dev/sys/dev/pccbb/pccbb.c
Warner Losh 4d8f4de40e Check the status of the card bridge first thing, rather than last in 
the loop.  This fixes the "my card is in the laptop on boot, but
doesn't attach" problem.
2002-02-20 16:20:27 +00:00

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/*
* Copyright (c) 2000,2001 Jonathan Chen.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Driver for PCI to Cardbus Bridge chips
*
* References:
* TI Datasheets:
* http://www-s.ti.com/cgi-bin/sc/generic2.cgi?family=PCI+CARDBUS+CONTROLLERS
*
* Written by Jonathan Chen <jon@freebsd.org>
* The author would like to acknowledge:
* * HAYAKAWA Koichi: Author of the NetBSD code for the same thing
* * Warner Losh: Newbus/newcard guru and author of the pccard side of things
* * YAMAMOTO Shigeru: Author of another FreeBSD cardbus driver
* * David Cross: Author of the initial ugly hack for a specific cardbus card
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/kthread.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <machine/clock.h>
#include <dev/pccard/pccardreg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/exca/excareg.h>
#include <dev/exca/excavar.h>
#include <dev/pccbb/pccbbreg.h>
#include <dev/pccbb/pccbbvar.h>
#include "power_if.h"
#include "card_if.h"
#include "pcib_if.h"
#define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
#define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
#define PCI_MASK_CONFIG(DEV,REG,MASK,SIZE) \
pci_write_config(DEV, REG, pci_read_config(DEV, REG, SIZE) MASK, SIZE)
#define PCI_MASK2_CONFIG(DEV,REG,MASK1,MASK2,SIZE) \
pci_write_config(DEV, REG, ( \
pci_read_config(DEV, REG, SIZE) MASK1) MASK2, SIZE)
#define PCCBB_START_MEM 0x84000000
#define PCCBB_START_32_IO 0x1000
#define PCCBB_START_16_IO 0x100
struct yenta_chipinfo {
uint32_t yc_id;
const char *yc_name;
int yc_chiptype;
} yc_chipsets[] = {
/* Texas Instruments chips */
{PCI_DEVICE_ID_PCIC_TI1031, "TI1031 PCI-PC Card Bridge", CB_TI113X},
{PCI_DEVICE_ID_PCIC_TI1130, "TI1130 PCI-CardBus Bridge", CB_TI113X},
{PCI_DEVICE_ID_PCIC_TI1131, "TI1131 PCI-CardBus Bridge", CB_TI113X},
{PCI_DEVICE_ID_PCIC_TI1210, "TI1210 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1211, "TI1211 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1220, "TI1220 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1221, "TI1221 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1225, "TI1225 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1250, "TI1250 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1251, "TI1251 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1251B,"TI1251B PCI-CardBus Bridge",CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1260, "TI1260 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1260B,"TI1260B PCI-CardBus Bridge",CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1410, "TI1410 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1420, "TI1420 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1421, "TI1421 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1450, "TI1450 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI1451, "TI1451 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI4410, "TI4410 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI4450, "TI4450 PCI-CardBus Bridge", CB_TI12XX},
{PCI_DEVICE_ID_PCIC_TI4451, "TI4451 PCI-CardBus Bridge", CB_TI12XX},
/* Ricoh chips */
{PCI_DEVICE_ID_RICOH_RL5C465, "RF5C465 PCI-CardBus Bridge",
CB_RF5C46X},
{PCI_DEVICE_ID_RICOH_RL5C466, "RF5C466 PCI-CardBus Bridge",
CB_RF5C46X},
{PCI_DEVICE_ID_RICOH_RL5C475, "RF5C475 PCI-CardBus Bridge",
CB_RF5C47X},
{PCI_DEVICE_ID_RICOH_RL5C476, "RF5C476 PCI-CardBus Bridge",
CB_RF5C47X},
{PCI_DEVICE_ID_RICOH_RL5C477, "RF5C477 PCI-CardBus Bridge",
CB_RF5C47X},
{PCI_DEVICE_ID_RICOH_RL5C478, "RF5C478 PCI-CardBus Bridge",
CB_RF5C47X},
/* Toshiba products */
{PCI_DEVICE_ID_TOSHIBA_TOPIC95, "ToPIC95 PCI-CardBus Bridge",
CB_TOPIC95},
{PCI_DEVICE_ID_TOSHIBA_TOPIC95B, "ToPIC95B PCI-CardBus Bridge",
CB_TOPIC95},
{PCI_DEVICE_ID_TOSHIBA_TOPIC97, "ToPIC97 PCI-CardBus Bridge",
CB_TOPIC97},
{PCI_DEVICE_ID_TOSHIBA_TOPIC100, "ToPIC100 PCI-CardBus Bridge",
CB_TOPIC97},
/* Cirrus Logic */
{PCI_DEVICE_ID_PCIC_CLPD6832, "CLPD6832 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_CLPD6833, "CLPD6833 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_CLPD6834, "CLPD6834 PCI-CardBus Bridge",
CB_CIRRUS},
/* 02Micro */
{PCI_DEVICE_ID_PCIC_OZ6832, "O2Mirco OZ6832/6833 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_OZ6860, "O2Mirco OZ6836/6860 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_OZ6872, "O2Mirco OZ6812/6872 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_OZ6912, "O2Mirco OZ6912/6972 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_OZ6922, "O2Mirco OZ6822 PCI-CardBus Bridge",
CB_CIRRUS},
{PCI_DEVICE_ID_PCIC_OZ6933, "O2Mirco OZ6833 PCI-CardBus Bridge",
CB_CIRRUS},
/* sentinel */
{0 /* null id */, "unknown", CB_UNKNOWN},
};
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, cbb, CTLFLAG_RD, 0, "CBB parameters");
/* There's no way to say TUNEABLE_LONG to get the right types */
u_long pccbb_start_mem = PCCBB_START_MEM;
TUNABLE_INT("hw.cbb.start_memory", (int *)&pccbb_start_mem);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_mem, CTLFLAG_RD,
&pccbb_start_mem, PCCBB_START_MEM,
"Starting address for memory allocations");
u_long pccbb_start_16_io = PCCBB_START_16_IO;
TUNABLE_INT("hw.cbb.start_16_io", (int *)&pccbb_start_16_io);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_16_io, CTLFLAG_RD,
&pccbb_start_16_io, PCCBB_START_16_IO,
"Starting ioport for 16-bit cards");
u_long pccbb_start_32_io = PCCBB_START_32_IO;
TUNABLE_INT("hw.cbb.start_32_io", (int *)&pccbb_start_32_io);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, start_32_io, CTLFLAG_RD,
&pccbb_start_32_io, PCCBB_START_32_IO,
"Starting ioport for 32-bit cards");
int cbb_debug = 0;
TUNABLE_INT("hw.cbb.debug", &cbb_debug);
SYSCTL_ULONG(_hw_cbb, OID_AUTO, debug, CTLFLAG_RD, &cbb_debug, 0,
"Verbose cardbus bridge debugging");
static int pccbb_chipset(uint32_t pci_id, const char **namep);
static int pccbb_probe(device_t brdev);
static void pccbb_chipinit(struct pccbb_softc *sc);
static int pccbb_attach(device_t brdev);
static int pccbb_detach(device_t brdev);
static int pccbb_shutdown(device_t brdev);
static void pccbb_driver_added(device_t brdev, driver_t *driver);
static void pccbb_child_detached(device_t brdev, device_t child);
static int pccbb_card_reprobe(device_t brdev, device_t busdev);
static void pccbb_event_thread(void *arg);
static void pccbb_insert(struct pccbb_softc *sc);
static void pccbb_removal(struct pccbb_softc *sc);
static void pccbb_intr(void *arg);
static int pccbb_detect_voltage(device_t brdev);
static int pccbb_power(device_t brdev, int volts);
static void pccbb_cardbus_reset(device_t brdev);
static int pccbb_cardbus_power_enable_socket(device_t brdev,
device_t child);
static void pccbb_cardbus_power_disable_socket(device_t brdev,
device_t child);
static int pccbb_cardbus_io_open(device_t brdev, int win, uint32_t start,
uint32_t end);
static int pccbb_cardbus_mem_open(device_t brdev, int win,
uint32_t start, uint32_t end);
static void pccbb_cardbus_auto_open(struct pccbb_softc *sc, int type);
static int pccbb_cardbus_activate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *res);
static int pccbb_cardbus_deactivate_resource(device_t brdev,
device_t child, int type, int rid, struct resource *res);
static struct resource *pccbb_cardbus_alloc_resource(device_t brdev,
device_t child, int type, int *rid, u_long start,
u_long end, u_long count, uint flags);
static int pccbb_cardbus_release_resource(device_t brdev, device_t child,
int type, int rid, struct resource *res);
static int pccbb_power_enable_socket(device_t brdev, device_t child);
static void pccbb_power_disable_socket(device_t brdev, device_t child);
static int pccbb_activate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static int pccbb_deactivate_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static struct resource *pccbb_alloc_resource(device_t brdev, device_t child,
int type, int *rid, u_long start, u_long end, u_long count,
uint flags);
static int pccbb_release_resource(device_t brdev, device_t child,
int type, int rid, struct resource *r);
static int pccbb_read_ivar(device_t brdev, device_t child, int which,
uintptr_t *result);
static int pccbb_write_ivar(device_t brdev, device_t child, int which,
uintptr_t value);
static int pccbb_maxslots(device_t brdev);
static uint32_t pccbb_read_config(device_t brdev, int b, int s, int f,
int reg, int width);
static void pccbb_write_config(device_t brdev, int b, int s, int f,
int reg, uint32_t val, int width);
/*
*/
static __inline void
pccbb_set(struct pccbb_softc *sc, uint32_t reg, uint32_t val)
{
bus_space_write_4(sc->bst, sc->bsh, reg, val);
}
static __inline uint32_t
pccbb_get(struct pccbb_softc *sc, uint32_t reg)
{
return (bus_space_read_4(sc->bst, sc->bsh, reg));
}
static __inline void
pccbb_setb(struct pccbb_softc *sc, uint32_t reg, uint32_t bits)
{
pccbb_set(sc, reg, pccbb_get(sc, reg) | bits);
}
static __inline void
pccbb_clrb(struct pccbb_softc *sc, uint32_t reg, uint32_t bits)
{
pccbb_set(sc, reg, pccbb_get(sc, reg) & ~bits);
}
static __inline uint8_t
pccbb_pcic_read(struct exca_softc *sc, int reg)
{
return (bus_space_read_1(sc->bst, sc->bsh, sc->offset + reg));
}
static __inline void
pccbb_pcic_write(struct exca_softc *sc, int reg, uint8_t val)
{
return (bus_space_write_1(sc->bst, sc->bsh, sc->offset + reg, val));
}
static void
pccbb_remove_res(struct pccbb_softc *sc, struct resource *res)
{
struct pccbb_reslist *rle;
SLIST_FOREACH(rle, &sc->rl, link) {
if (rle->res == res) {
SLIST_REMOVE(&sc->rl, rle, pccbb_reslist, link);
free(rle, M_DEVBUF);
return;
}
}
}
static struct resource *
pccbb_find_res(struct pccbb_softc *sc, int type, int rid)
{
struct pccbb_reslist *rle;
SLIST_FOREACH(rle, &sc->rl, link)
if (SYS_RES_MEMORY == rle->type && rid == rle->rid)
return (rle->res);
return (NULL);
}
static void
pccbb_insert_res(struct pccbb_softc *sc, struct resource *res, int type,
int rid)
{
struct pccbb_reslist *rle;
/*
* Need to record allocated resource so we can iterate through
* it later.
*/
rle = malloc(sizeof(struct pccbb_reslist), M_DEVBUF, M_NOWAIT);
if (!res)
panic("pccbb_cardbus_alloc_resource: can't record entry!");
rle->res = res;
rle->type = type;
rle->rid = rid;
SLIST_INSERT_HEAD(&sc->rl, rle, link);
}
static void
pccbb_destroy_res(struct pccbb_softc *sc)
{
struct pccbb_reslist *rle;
while ((rle = SLIST_FIRST(&sc->rl)) != NULL) {
device_printf(sc->dev, "Danger Will Robinson: Resource "
"left allocated! This is a bug... "
"(rid=%x, type=%d, addr=%lx)\n", rle->rid, rle->type,
rman_get_start(rle->res));
SLIST_REMOVE_HEAD(&sc->rl, link);
free(rle, M_DEVBUF);
}
}
/************************************************************************/
/* Probe/Attach */
/************************************************************************/
static int
pccbb_chipset(uint32_t pci_id, const char **namep)
{
struct yenta_chipinfo *ycp;
for (ycp = yc_chipsets; ycp->yc_id != 0 && pci_id != ycp->yc_id; ++ycp)
continue;
if (namep != NULL)
*namep = ycp->yc_name;
return (ycp->yc_chiptype);
}
static int
pccbb_probe(device_t brdev)
{
const char *name;
uint32_t progif;
uint32_t subclass;
/*
* Do we know that we support the chipset? If so, then we
* accept the device.
*/
if (pccbb_chipset(pci_get_devid(brdev), &name) != CB_UNKNOWN) {
device_set_desc(brdev, name);
return (0);
}
/*
* We do support generic CardBus bridges. All that we've seen
* to date have progif 0 (the Yenta spec, and successors mandate
* this). We do not support PCI PCMCIA bridges (with one exception)
* with this driver since they generally are I/O mapped. Those
* are supported by the pcic driver. This should help us be more
* future proof.
*/
subclass = pci_get_subclass(brdev);
progif = pci_get_progif(brdev);
if (subclass == PCIS_BRIDGE_CARDBUS && progif == 0) {
device_set_desc(brdev, "PCI-CardBus Bridge");
return (0);
}
return (ENXIO);
}
static void
pccbb_chipinit(struct pccbb_softc *sc)
{
/* Set CardBus latency timer */
if (pci_read_config(sc->dev, PCIR_SECLAT_1, 1) < 0x20)
pci_write_config(sc->dev, PCIR_SECLAT_1, 0x20, 1);
/* Set PCI latency timer */
if (pci_read_config(sc->dev, PCIR_LATTIMER, 1) < 0x20)
pci_write_config(sc->dev, PCIR_LATTIMER, 0x20, 1);
/* Enable memory access */
PCI_MASK_CONFIG(sc->dev, PCIR_COMMAND,
| PCIM_CMD_MEMEN
| PCIM_CMD_PORTEN
| PCIM_CMD_BUSMASTEREN, 2);
/* disable Legacy IO */
switch (sc->chipset) {
case CB_RF5C46X:
PCI_MASK_CONFIG(sc->dev, CBBR_BRIDGECTRL,
& ~(CBBM_BRIDGECTRL_RL_3E0_EN |
CBBM_BRIDGECTRL_RL_3E2_EN), 2);
break;
default:
pci_write_config(sc->dev, CBBR_LEGACY, 0x0, 4);
break;
}
/* Use PCI interrupt for interrupt routing */
PCI_MASK2_CONFIG(sc->dev, CBBR_BRIDGECTRL,
& ~(CBBM_BRIDGECTRL_MASTER_ABORT |
CBBM_BRIDGECTRL_INTR_IREQ_EN),
| CBBM_BRIDGECTRL_WRITE_POST_EN,
2);
/*
* XXX this should be a function table, ala OLDCARD. This means
* that we could more easily support ISA interrupts for pccard
* cards if we had to.
*/
switch (sc->chipset) {
case CB_TI113X:
/*
* The TI 1031, TI 1130 and TI 1131 all require another bit
* be set to enable PCI routing of interrupts, and then
* a bit for each of the CSC and Function interrupts we
* want routed.
*/
PCI_MASK_CONFIG(sc->dev, CBBR_CBCTRL,
| CBBM_CBCTRL_113X_PCI_INTR |
CBBM_CBCTRL_113X_PCI_CSC | CBBM_CBCTRL_113X_PCI_IRQ_EN,
1);
PCI_MASK_CONFIG(sc->dev, CBBR_DEVCTRL,
& ~(CBBM_DEVCTRL_INT_SERIAL |
CBBM_DEVCTRL_INT_PCI), 1);
break;
case CB_TOPIC97:
/*
* Disable Zoom Video, ToPIC 97, 100.
*/
pci_write_config(sc->dev, CBBR_TOPIC_ZV_CONTROL, 0, 1);
/*
* ToPIC 97, 100
* At offset 0xa1: INTERRUPT CONTROL register
* 0x1: Turn on INT interrupts.
*/
PCI_MASK_CONFIG(sc->dev, CBBR_TOPIC_INTCTRL,
| CBBM_TOPIC_INTCTRL_INTIRQSEL, 1);
goto topic_common;
case CB_TOPIC95:
/*
* SOCKETCTRL appears to be TOPIC 95/B specific
*/
PCI_MASK_CONFIG(sc->dev, CBBR_TOPIC_SOCKETCTRL,
| CBBM_TOPIC_SOCKETCTRL_SCR_IRQSEL, 4);
topic_common:;
/*
* At offset 0xa0: SLOT CONTROL
* 0x80 Enable Cardbus Functionality
* 0x40 Enable Cardbus and PC Card registers
* 0x20 Lock ID in exca regs
* 0x10 Write protect ID in config regs
* Clear the rest of the bits, which defaults the slot
* in legacy mode to 0x3e0 and offset 0. (legacy
* mode is determined elsewhere)
*/
pci_write_config(sc->dev, CBBR_TOPIC_SLOTCTRL,
CBBM_TOPIC_SLOTCTRL_SLOTON |
CBBM_TOPIC_SLOTCTRL_SLOTEN |
CBBM_TOPIC_SLOTCTRL_ID_LOCK |
CBBM_TOPIC_SLOTCTRL_ID_WP, 1);
/*
* At offset 0xa3 Card Detect Control Register
* 0x80 CARDBUS enbale
* 0x01 Cleared for hardware change detect
*/
PCI_MASK2_CONFIG(sc->dev, CBBR_TOPIC_CDC,
| CBBM_TOPIC_CDC_CARDBUS,
& ~CBBM_TOPIC_CDC_SWDETECT, 4);
break;
}
/*
* Need to tell ExCA registers to route via PCI interrupts. There
* are two ways to do this. Once is to set INTR_ENABLE and the
* other is to set CSC to 0. Since both methods are mutually
* compatible, we do both.
*/
exca_write(&sc->exca, EXCA_INTR, EXCA_INTR_ENABLE);
exca_write(&sc->exca, EXCA_CSC_INTR, 0);
/* close all memory and io windows */
pci_write_config(sc->dev, CBBR_MEMBASE0, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_MEMLIMIT0, 0, 4);
pci_write_config(sc->dev, CBBR_MEMBASE1, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_MEMLIMIT1, 0, 4);
pci_write_config(sc->dev, CBBR_IOBASE0, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_IOLIMIT0, 0, 4);
pci_write_config(sc->dev, CBBR_IOBASE1, 0xffffffff, 4);
pci_write_config(sc->dev, CBBR_IOLIMIT1, 0, 4);
}
static int
pccbb_attach(device_t brdev)
{
struct pccbb_softc *sc = (struct pccbb_softc *)device_get_softc(brdev);
int rid;
uint32_t sockbase;
mtx_init(&sc->mtx, device_get_nameunit(brdev), MTX_DEF);
sc->chipset = pccbb_chipset(pci_get_devid(brdev), NULL);
sc->dev = brdev;
sc->cbdev = NULL;
sc->pccarddev = NULL;
sc->secbus = pci_read_config(brdev, PCIR_SECBUS_2, 1);
sc->subbus = pci_read_config(brdev, PCIR_SUBBUS_2, 1);
SLIST_INIT(&sc->rl);
/*
* The PCI bus code should assign us memory in the absense
* of the BIOS doing so. However, 'should' isn't 'is,' so we kludge
* up something here until the PCI/acpi code properly assigns the
* resource.
*/
rid = CBBR_SOCKBASE;
sc->base_res = bus_alloc_resource(brdev, SYS_RES_MEMORY, &rid,
0, ~0, 1, RF_ACTIVE);
if (!sc->base_res) {
/*
* Generally, the BIOS will assign this memory for us.
* However, newer BIOSes do not because the MS design
* documents have mandated that this is for the OS
* to assign rather than the BIOS. This driver shouldn't
* be doing this, but until the pci bus code (or acpi)
* does this, we allow CardBus bridges to work on more
* machines.
*/
sockbase = pci_read_config(brdev, rid, 4);
if (sockbase < 0x100000 || sockbase >= 0xfffffff0) {
pci_write_config(brdev, rid, 0xffffffff, 4);
sockbase = pci_read_config(brdev, rid, 4);
sockbase = (sockbase & 0xfffffff0) &
-(sockbase & 0xfffffff0);
sc->base_res = bus_generic_alloc_resource(
device_get_parent(brdev), brdev, SYS_RES_MEMORY,
&rid, pccbb_start_mem, ~0, sockbase,
RF_ACTIVE|rman_make_alignment_flags(sockbase));
if (!sc->base_res) {
device_printf(brdev,
"Could not grab register memory\n");
mtx_destroy(&sc->mtx);
return (ENOMEM);
}
pci_write_config(brdev, CBBR_SOCKBASE,
rman_get_start(sc->base_res), 4);
DEVPRINTF((brdev, "PCI Memory allocated: %08lx\n",
rman_get_start(sc->base_res)));
} else {
device_printf(brdev, "Could not map register memory\n");
mtx_destroy(&sc->mtx);
return (ENOMEM);
}
}
sc->bst = rman_get_bustag(sc->base_res);
sc->bsh = rman_get_bushandle(sc->base_res);
exca_init(&sc->exca, brdev, &pccbb_pcic_write, &pccbb_pcic_read,
sc->bst, sc->bsh, 0x800);
pccbb_chipinit(sc);
/* attach children */
sc->cbdev = device_add_child(brdev, "cardbus", -1);
if (sc->cbdev == NULL)
DEVPRINTF((brdev, "WARNING: cannot add cardbus bus.\n"));
else if (device_probe_and_attach(sc->cbdev) != 0) {
DEVPRINTF((brdev, "WARNING: cannot attach cardbus bus!\n"));
sc->cbdev = NULL;
}
sc->pccarddev = device_add_child(brdev, "pccard", -1);
if (sc->pccarddev == NULL)
DEVPRINTF((brdev, "WARNING: cannot add pccard bus.\n"));
else if (device_probe_and_attach(sc->pccarddev) != 0) {
DEVPRINTF((brdev, "WARNING: cannot attach pccard bus.\n"));
sc->pccarddev = NULL;
}
/* Map and establish the interrupt. */
rid = 0;
sc->irq_res = bus_alloc_resource(brdev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (sc->irq_res == NULL) {
printf("pccbb: Unable to map IRQ...\n");
bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
mtx_destroy(&sc->mtx);
return (ENOMEM);
}
if (bus_setup_intr(brdev, sc->irq_res, INTR_TYPE_AV, pccbb_intr, sc,
&sc->intrhand)) {
device_printf(brdev, "couldn't establish interrupt");
bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
mtx_destroy(&sc->mtx);
return (ENOMEM);
}
/* CSC Interrupt: Card detect interrupt on */
pccbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
/* reset interrupt */
pccbb_set(sc, CBB_SOCKET_EVENT, pccbb_get(sc, CBB_SOCKET_EVENT));
/* Start the thread */
if (kthread_create(pccbb_event_thread, sc, &sc->event_thread, 0,
"%s%d", device_get_name(sc->dev), device_get_unit(sc->dev))) {
device_printf (sc->dev, "unable to create event thread.\n");
panic ("pccbb_create_event_thread");
}
return (0);
}
static int
pccbb_detach(device_t brdev)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int numdevs;
device_t *devlist;
int tmp;
int error;
device_get_children(brdev, &devlist, &numdevs);
error = 0;
for (tmp = 0; tmp < numdevs; tmp++) {
if (device_detach(devlist[tmp]) == 0)
device_delete_child(brdev, devlist[tmp]);
else
error++;
}
free(devlist, M_TEMP);
if (error > 0)
return (ENXIO);
mtx_lock(&sc->mtx);
bus_teardown_intr(brdev, sc->irq_res, sc->intrhand);
sc->flags |= PCCBB_KTHREAD_DONE;
if (sc->flags & PCCBB_KTHREAD_RUNNING) {
wakeup(sc);
mtx_unlock(&sc->mtx);
DEVPRINTF((brdev, "waiting for kthread exit..."));
error = tsleep(sc, PWAIT, "pccbb-detach-wait", 60 * hz);
if (error)
DPRINTF(("timeout\n"));
else
DPRINTF(("done\n"));
} else {
mtx_unlock(&sc->mtx);
}
bus_release_resource(brdev, SYS_RES_IRQ, 0, sc->irq_res);
bus_release_resource(brdev, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
mtx_destroy(&sc->mtx);
return (0);
}
static int
pccbb_shutdown(device_t brdev)
{
struct pccbb_softc *sc = (struct pccbb_softc *)device_get_softc(brdev);
/* properly reset everything at shutdown */
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET);
pccbb_set(sc, CBB_SOCKET_MASK, 0);
pccbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
exca_write(&sc->exca, EXCA_ADDRWIN_ENABLE, 0);
pci_write_config(brdev, CBBR_MEMBASE0, 0, 4);
pci_write_config(brdev, CBBR_MEMLIMIT0, 0, 4);
pci_write_config(brdev, CBBR_MEMBASE1, 0, 4);
pci_write_config(brdev, CBBR_MEMLIMIT1, 0, 4);
pci_write_config(brdev, CBBR_IOBASE0, 0, 4);
pci_write_config(brdev, CBBR_IOLIMIT0, 0, 4);
pci_write_config(brdev, CBBR_IOBASE1, 0, 4);
pci_write_config(brdev, CBBR_IOLIMIT1, 0, 4);
pci_write_config(brdev, PCIR_COMMAND, 0, 2);
return (0);
}
static int
pccbb_setup_intr(device_t dev, device_t child, struct resource *irq,
int flags, driver_intr_t *intr, void *arg, void **cookiep)
{
int err;
/*
* You aren't allowed to have fast interrupts for pccard/cardbus
* things since those interrupts are PCI and shared. Since we use
* the PCI interrupt for the status change interrupts, it can't be
* free for use by the driver. Fast interrupts must not be shared.
*/
if ((flags & INTR_FAST) != 0)
return (EINVAL);
err = bus_generic_setup_intr(dev, child, irq, flags, intr, arg,
cookiep);
/*
* XXX need to turn on ISA interrupts, if we ever support them, but
* XXX for now that's all we need to do.
*/
return (err);
}
static int
pccbb_teardown_intr(device_t dev, device_t child, struct resource *irq,
void *cookie)
{
/* XXX Need to do different things for ISA interrupts. */
return (bus_generic_teardown_intr(dev, child, irq, cookie));
}
static void
pccbb_driver_added(device_t brdev, driver_t *driver)
{
struct pccbb_softc *sc = device_get_softc(brdev);
device_t *devlist;
int tmp;
int numdevs;
int wake;
uint32_t sockstate;
DEVICE_IDENTIFY(driver, brdev);
device_get_children(brdev, &devlist, &numdevs);
wake = 0;
sockstate = pccbb_get(sc, CBB_SOCKET_STATE);
for (tmp = 0; tmp < numdevs; tmp++) {
if (device_get_state(devlist[tmp]) == DS_NOTPRESENT &&
device_probe_and_attach(devlist[tmp]) == 0) {
if (devlist[tmp] == NULL)
/* NOTHING */;
else if (strcmp(driver->name, "cardbus") == 0) {
sc->cbdev = devlist[tmp];
if (((sockstate & CBB_SOCKET_STAT_CD) == 0) &&
(sockstate & CBB_SOCKET_STAT_CB))
wake++;
} else if (strcmp(driver->name, "pccard") == 0) {
sc->pccarddev = devlist[tmp];
if (((sockstate & CBB_SOCKET_STAT_CD) == 0) &&
(sockstate & CBB_SOCKET_STAT_16BIT))
wake++;
} else
device_printf(brdev,
"Unsupported child bus: %s\n",
driver->name);
}
}
free(devlist, M_TEMP);
if (wake > 0) {
if ((pccbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD)
== 0) {
mtx_lock(&sc->mtx);
wakeup(sc);
mtx_unlock(&sc->mtx);
}
}
}
static void
pccbb_child_detached(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (child == sc->cbdev)
sc->cbdev = NULL;
else if (child == sc->pccarddev)
sc->pccarddev = NULL;
else
device_printf(brdev, "Unknown child detached: %s %p/%p\n",
device_get_nameunit(child), sc->cbdev, sc->pccarddev);
}
static int
pccbb_card_reprobe(device_t brdev, device_t busdev)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int wake = 0;
uint32_t sockstate;
sockstate = pccbb_get(sc, CBB_SOCKET_STATE);
if ((sockstate & CBB_SOCKET_STAT_CD) == 0) {
if (busdev == sc->cbdev &&
(sockstate & CBB_SOCKET_STAT_CB))
wake++;
else if (busdev == sc->pccarddev &&
(sockstate & CBB_SOCKET_STAT_16BIT))
wake++;
if (wake > 0) {
mtx_lock(&sc->mtx);
wakeup(sc);
mtx_unlock(&sc->mtx);
return (0);
}
return (EBUSY);
}
return (ENOENT);
}
/************************************************************************/
/* Kthreads */
/************************************************************************/
static void
pccbb_event_thread(void *arg)
{
struct pccbb_softc *sc = arg;
uint32_t status;
int err;
/*
* We take out Giant here because we drop it in tsleep
* and need it for kthread_exit, which drops it.
*/
mtx_lock(&Giant);
sc->flags |= PCCBB_KTHREAD_RUNNING;
while (1) {
/*
* Check to see if we have anything first so that
* if there's a card already inserted, we do the
* right thing.
*/
mtx_lock(&sc->mtx);
if (sc->flags & PCCBB_KTHREAD_DONE)
break;
status = pccbb_get(sc, CBB_SOCKET_STATE);
if ((status & CBB_SOCKET_STAT_CD) == 0)
pccbb_insert(sc);
else
pccbb_removal(sc);
mtx_unlock(&sc->mtx);
/*
* Wait until it has been 1s since the last time we
* get an interrupt. We handle the rest of the interrupt
* at the top of the loop.
*/
tsleep (sc, PWAIT, "pccbbev", 0);
do {
err = tsleep (sc, PWAIT, "pccbbev", 1 * hz);
} while (err != EWOULDBLOCK &&
(sc->flags & PCCBB_KTHREAD_DONE) == 0);
}
mtx_unlock(&sc->mtx);
sc->flags &= ~PCCBB_KTHREAD_RUNNING;
/*
* XXX I think there's a race here. If we wakeup in the other
* thread before kthread_exit is called and this routine returns,
* and that thread causes us to be unmapped, then we are setting
* ourselves up for a panic. Make sure that I check out
* jhb's crash.c for a fix.
*/
wakeup(sc);
kthread_exit(0);
}
/************************************************************************/
/* Insert/removal */
/************************************************************************/
static void
pccbb_insert(struct pccbb_softc *sc)
{
uint32_t sockevent, sockstate;
int timeout = 30;
/*
* Debounce interrupt. However, most of the debounce
* is done in the thread's timeout routines.
*/
do {
sockevent = pccbb_get(sc, CBB_SOCKET_EVENT);
sockstate = pccbb_get(sc, CBB_SOCKET_STATE);
} while (sockstate & CBB_SOCKET_STAT_CD && --timeout > 0);
if (timeout < 0) {
device_printf (sc->dev, "insert timeout");
return;
}
DEVPRINTF((sc->dev, "card inserted: event=0x%08x, state=%08x\n",
sockevent, sockstate));
if (sockstate & CBB_SOCKET_STAT_16BIT) {
if (sc->pccarddev != NULL) {
sc->flags |= PCCBB_16BIT_CARD;
if (CARD_ATTACH_CARD(sc->pccarddev) != 0)
device_printf(sc->dev,
"PC Card card activation failed\n");
} else {
device_printf(sc->dev,
"PC Card inserted, but no pccard bus.\n");
}
} else if (sockstate & CBB_SOCKET_STAT_CB) {
if (sc->cbdev != NULL) {
sc->flags &= ~PCCBB_16BIT_CARD;
if (CARD_ATTACH_CARD(sc->cbdev) != 0)
device_printf(sc->dev,
"CardBus card activation failed\n");
} else {
device_printf(sc->dev,
"CardBUS card inserted, but no cardbus bus.\n");
}
} else {
/*
* We should power the card down, and try again a couple of
* times if this happens. XXX
*/
device_printf (sc->dev, "Unsupported card type detected\n");
}
}
static void
pccbb_removal(struct pccbb_softc *sc)
{
if (sc->flags & PCCBB_16BIT_CARD && sc->pccarddev != NULL)
CARD_DETACH_CARD(sc->pccarddev, DETACH_FORCE);
else if ((!(sc->flags & PCCBB_16BIT_CARD)) && sc->cbdev != NULL)
CARD_DETACH_CARD(sc->cbdev, DETACH_FORCE);
pccbb_destroy_res(sc);
}
/************************************************************************/
/* Interrupt Handler */
/************************************************************************/
static void
pccbb_intr(void *arg)
{
struct pccbb_softc *sc = arg;
uint32_t sockevent;
/*
* This ISR needs work XXX
*/
sockevent = pccbb_get(sc, CBB_SOCKET_EVENT);
if (sockevent) {
/* ack the interrupt */
pccbb_setb(sc, CBB_SOCKET_EVENT, sockevent);
if (sockevent & CBB_SOCKET_EVENT_CD) {
mtx_lock(&sc->mtx);
wakeup(sc);
mtx_unlock(&sc->mtx);
}
if (sockevent & CBB_SOCKET_EVENT_CSTS) {
DPRINTF((" cstsevent occured: 0x%08x\n",
pccbb_get(sc, CBB_SOCKET_STATE)));
}
if (sockevent & CBB_SOCKET_EVENT_POWER) {
DPRINTF((" pwrevent occured: 0x%08x\n",
pccbb_get(sc, CBB_SOCKET_STATE)));
}
/* Other bits? */
}
/* Call the interrupt if we still have the card */
}
/************************************************************************/
/* Generic Power functions */
/************************************************************************/
static int
pccbb_detect_voltage(device_t brdev)
{
struct pccbb_softc *sc = device_get_softc(brdev);
uint32_t psr;
int vol = CARD_UKN_CARD;
psr = pccbb_get(sc, CBB_SOCKET_STATE);
if (psr & CBB_SOCKET_STAT_5VCARD)
vol |= CARD_5V_CARD;
if (psr & CBB_SOCKET_STAT_3VCARD)
vol |= CARD_3V_CARD;
if (psr & CBB_SOCKET_STAT_XVCARD)
vol |= CARD_XV_CARD;
if (psr & CBB_SOCKET_STAT_YVCARD)
vol |= CARD_YV_CARD;
return (vol);
}
static int
pccbb_power(device_t brdev, int volts)
{
uint32_t status, sock_ctrl;
struct pccbb_softc *sc = device_get_softc(brdev);
int timeout;
uint32_t sockevent;
DEVPRINTF((sc->dev, "pccbb_power: %s and %s [%x]\n",
(volts & CARD_VCCMASK) == CARD_VCC_UC ? "CARD_VCC_UC" :
(volts & CARD_VCCMASK) == CARD_VCC_5V ? "CARD_VCC_5V" :
(volts & CARD_VCCMASK) == CARD_VCC_3V ? "CARD_VCC_3V" :
(volts & CARD_VCCMASK) == CARD_VCC_XV ? "CARD_VCC_XV" :
(volts & CARD_VCCMASK) == CARD_VCC_YV ? "CARD_VCC_YV" :
(volts & CARD_VCCMASK) == CARD_VCC_0V ? "CARD_VCC_0V" :
"VCC-UNKNOWN",
(volts & CARD_VPPMASK) == CARD_VPP_UC ? "CARD_VPP_UC" :
(volts & CARD_VPPMASK) == CARD_VPP_12V ? "CARD_VPP_12V" :
(volts & CARD_VPPMASK) == CARD_VPP_VCC ? "CARD_VPP_VCC" :
(volts & CARD_VPPMASK) == CARD_VPP_0V ? "CARD_VPP_0V" :
"VPP-UNKNOWN",
volts));
status = pccbb_get(sc, CBB_SOCKET_STATE);
sock_ctrl = pccbb_get(sc, CBB_SOCKET_CONTROL);
switch (volts & CARD_VCCMASK) {
case CARD_VCC_UC:
break;
case CARD_VCC_5V:
if (CBB_SOCKET_STAT_5VCARD & status) { /* check 5 V card */
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VCC_5V;
} else {
device_printf(sc->dev,
"BAD voltage request: no 5 V card\n");
}
break;
case CARD_VCC_3V:
if (CBB_SOCKET_STAT_3VCARD & status) {
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VCC_3V;
} else {
device_printf(sc->dev,
"BAD voltage request: no 3.3 V card\n");
}
break;
case CARD_VCC_0V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
break;
default:
return (0); /* power NEVER changed */
break;
}
switch (volts & CARD_VPPMASK) {
case CARD_VPP_UC:
break;
case CARD_VPP_0V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
break;
case CARD_VPP_VCC:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
sock_ctrl |= ((sock_ctrl >> 4) & 0x07);
break;
case CARD_VPP_12V:
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
sock_ctrl |= CBB_SOCKET_CTRL_VPP_12V;
break;
}
if (pccbb_get(sc, CBB_SOCKET_CONTROL) == sock_ctrl)
return (1); /* no change necessary */
pccbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl);
status = pccbb_get(sc, CBB_SOCKET_STATE);
/*
* XXX This busy wait is bogus. We should wait for a power
* interrupt and then whine if the status is bad. If we're
* worried about the card not coming up, then we should also
* schedule a timeout which we can cacel in the power interrupt.
*/
timeout = 20;
do {
DELAY(20*1000);
sockevent = pccbb_get(sc, CBB_SOCKET_EVENT);
} while (!(sockevent & CBB_SOCKET_EVENT_POWER) && --timeout > 0);
/* reset event status */
/* XXX should only reset EVENT_POWER */
pccbb_set(sc, CBB_SOCKET_EVENT, sockevent);
if (timeout < 0) {
printf ("VCC supply failed.\n");
return (0);
}
/* XXX
* delay 400 ms: thgough the standard defines that the Vcc set-up time
* is 20 ms, some PC-Card bridge requires longer duration.
* XXX Note: We should check the stutus AFTER the delay to give time
* for things to stabilize.
*/
DELAY(400*1000);
if (status & CBB_SOCKET_STAT_BADVCC) {
device_printf(sc->dev,
"bad Vcc request. ctrl=0x%x, status=0x%x\n",
sock_ctrl ,status);
printf("pccbb_power: %s and %s [%x]\n",
(volts & CARD_VCCMASK) == CARD_VCC_UC ? "CARD_VCC_UC" :
(volts & CARD_VCCMASK) == CARD_VCC_5V ? "CARD_VCC_5V" :
(volts & CARD_VCCMASK) == CARD_VCC_3V ? "CARD_VCC_3V" :
(volts & CARD_VCCMASK) == CARD_VCC_XV ? "CARD_VCC_XV" :
(volts & CARD_VCCMASK) == CARD_VCC_YV ? "CARD_VCC_YV" :
(volts & CARD_VCCMASK) == CARD_VCC_0V ? "CARD_VCC_0V" :
"VCC-UNKNOWN",
(volts & CARD_VPPMASK) == CARD_VPP_UC ? "CARD_VPP_UC" :
(volts & CARD_VPPMASK) == CARD_VPP_12V ? "CARD_VPP_12V":
(volts & CARD_VPPMASK) == CARD_VPP_VCC ? "CARD_VPP_VCC":
(volts & CARD_VPPMASK) == CARD_VPP_0V ? "CARD_VPP_0V" :
"VPP-UNKNOWN",
volts);
return (0);
}
return (1); /* power changed correctly */
}
/*
* detect the voltage for the card, and set it. Since the power
* used is the square of the voltage, lower voltages is a big win
* and what Windows does (and what Microsoft prefers). The MS paper
* also talks about preferring the CIS entry as well.
*/
static int
pccbb_do_power(device_t brdev)
{
int voltage;
/* Prefer lowest voltage supported */
voltage = pccbb_detect_voltage(brdev);
pccbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
if (voltage & CARD_YV_CARD)
pccbb_power(brdev, CARD_VCC_YV | CARD_VPP_VCC);
else if (voltage & CARD_XV_CARD)
pccbb_power(brdev, CARD_VCC_XV | CARD_VPP_VCC);
else if (voltage & CARD_3V_CARD)
pccbb_power(brdev, CARD_VCC_3V | CARD_VPP_VCC);
else if (voltage & CARD_5V_CARD)
pccbb_power(brdev, CARD_VCC_5V | CARD_VPP_VCC);
else {
device_printf(brdev, "Unknown card voltage\n");
return (ENXIO);
}
return (0);
}
/************************************************************************/
/* Cardbus power functions */
/************************************************************************/
static void
pccbb_cardbus_reset(device_t brdev)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int delay_us;
delay_us = sc->chipset == CB_RF5C47X ? 400*1000 : 20*1000;
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL, |CBBM_BRIDGECTRL_RESET, 2);
DELAY(delay_us);
/* If a card exists, unreset it! */
if ((pccbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD) == 0) {
PCI_MASK_CONFIG(brdev, CBBR_BRIDGECTRL,
&~CBBM_BRIDGECTRL_RESET, 2);
DELAY(delay_us);
}
}
static int
pccbb_cardbus_power_enable_socket(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int err;
if ((pccbb_get(sc, CBB_SOCKET_STATE) & CBB_SOCKET_STAT_CD) ==
CBB_SOCKET_STAT_CD)
return (ENODEV);
err = pccbb_do_power(brdev);
if (err)
return (err);
pccbb_cardbus_reset(brdev);
return (0);
}
static void
pccbb_cardbus_power_disable_socket(device_t brdev, device_t child)
{
pccbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
pccbb_cardbus_reset(brdev);
}
/************************************************************************/
/* Cardbus Resource */
/************************************************************************/
static int
pccbb_cardbus_io_open(device_t brdev, int win, uint32_t start, uint32_t end)
{
int basereg;
int limitreg;
if ((win < 0) || (win > 1)) {
DEVPRINTF((brdev,
"pccbb_cardbus_io_open: window out of range %d\n", win));
return (EINVAL);
}
basereg = win * 8 + CBBR_IOBASE0;
limitreg = win * 8 + CBBR_IOLIMIT0;
pci_write_config(brdev, basereg, start, 4);
pci_write_config(brdev, limitreg, end, 4);
return (0);
}
static int
pccbb_cardbus_mem_open(device_t brdev, int win, uint32_t start, uint32_t end)
{
int basereg;
int limitreg;
if ((win < 0) || (win > 1)) {
DEVPRINTF((brdev,
"pccbb_cardbus_mem_open: window out of range %d\n", win));
return (EINVAL);
}
basereg = win*8 + CBBR_MEMBASE0;
limitreg = win*8 + CBBR_MEMLIMIT0;
pci_write_config(brdev, basereg, start, 4);
pci_write_config(brdev, limitreg, end, 4);
return (0);
}
/*
* XXX The following function belongs in the pci bus layer.
*/
static void
pccbb_cardbus_auto_open(struct pccbb_softc *sc, int type)
{
uint32_t starts[2];
uint32_t ends[2];
struct pccbb_reslist *rle;
int align;
int prefetchable[2];
uint32_t reg;
starts[0] = starts[1] = 0xffffffff;
ends[0] = ends[1] = 0;
if (type == SYS_RES_MEMORY)
align = CBB_MEMALIGN;
else if (type == SYS_RES_IOPORT)
align = CBB_IOALIGN;
else
align = 1;
SLIST_FOREACH(rle, &sc->rl, link) {
if (rle->type != type)
;
else if (rle->res == NULL) {
device_printf(sc->dev, "WARNING: Resource not reserved? "
"(type=%d, addr=%lx)\n",
rle->type, rman_get_start(rle->res));
} else if (!(rman_get_flags(rle->res) & RF_ACTIVE)) {
/* XXX */
} else if (starts[0] == 0xffffffff) {
starts[0] = rman_get_start(rle->res);
ends[0] = rman_get_end(rle->res);
prefetchable[0] =
rman_get_flags(rle->res) & RF_PREFETCHABLE;
} else if (rman_get_end(rle->res) > ends[0] &&
rman_get_start(rle->res) - ends[0] <
PCCBB_AUTO_OPEN_SMALLHOLE && prefetchable[0] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
ends[0] = rman_get_end(rle->res);
} else if (rman_get_start(rle->res) < starts[0] &&
starts[0] - rman_get_end(rle->res) <
PCCBB_AUTO_OPEN_SMALLHOLE && prefetchable[0] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
starts[0] = rman_get_start(rle->res);
} else if (starts[1] == 0xffffffff) {
starts[1] = rman_get_start(rle->res);
ends[1] = rman_get_end(rle->res);
prefetchable[1] =
rman_get_flags(rle->res) & RF_PREFETCHABLE;
} else if (rman_get_end(rle->res) > ends[1] &&
rman_get_start(rle->res) - ends[1] <
PCCBB_AUTO_OPEN_SMALLHOLE && prefetchable[1] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
ends[1] = rman_get_end(rle->res);
} else if (rman_get_start(rle->res) < starts[1] &&
starts[1] - rman_get_end(rle->res) <
PCCBB_AUTO_OPEN_SMALLHOLE && prefetchable[1] ==
(rman_get_flags(rle->res) & RF_PREFETCHABLE)) {
starts[1] = rman_get_start(rle->res);
} else {
uint32_t diffs[2];
int win;
diffs[0] = diffs[1] = 0xffffffff;
if (rman_get_start(rle->res) > ends[0])
diffs[0] = rman_get_start(rle->res) - ends[0];
else if (rman_get_end(rle->res) < starts[0])
diffs[0] = starts[0] - rman_get_end(rle->res);
if (rman_get_start(rle->res) > ends[1])
diffs[1] = rman_get_start(rle->res) - ends[1];
else if (rman_get_end(rle->res) < starts[1])
diffs[1] = starts[1] - rman_get_end(rle->res);
win = (diffs[0] <= diffs[1])?0:1;
if (rman_get_start(rle->res) > ends[win])
ends[win] = rman_get_end(rle->res);
else if (rman_get_end(rle->res) < starts[win])
starts[win] = rman_get_start(rle->res);
if (!(rman_get_flags(rle->res) & RF_PREFETCHABLE))
prefetchable[win] = 0;
}
if (starts[0] != 0xffffffff)
starts[0] -= starts[0] % align;
if (starts[1] != 0xffffffff)
starts[1] -= starts[1] % align;
if (ends[0] % align != 0)
ends[0] += align - ends[0]%align - 1;
if (ends[1] % align != 0)
ends[1] += align - ends[1]%align - 1;
}
if (type == SYS_RES_MEMORY) {
pccbb_cardbus_mem_open(sc->dev, 0, starts[0], ends[0]);
pccbb_cardbus_mem_open(sc->dev, 1, starts[1], ends[1]);
reg = pci_read_config(sc->dev, CBBR_BRIDGECTRL, 2);
reg &= ~(CBBM_BRIDGECTRL_PREFETCH_0|
CBBM_BRIDGECTRL_PREFETCH_1);
reg |= (prefetchable[0]?CBBM_BRIDGECTRL_PREFETCH_0:0)|
(prefetchable[1]?CBBM_BRIDGECTRL_PREFETCH_1:0);
pci_write_config(sc->dev, CBBR_BRIDGECTRL, reg, 2);
} else if (type == SYS_RES_IOPORT) {
pccbb_cardbus_io_open(sc->dev, 0, starts[0], ends[0]);
pccbb_cardbus_io_open(sc->dev, 1, starts[1], ends[1]);
}
}
static int
pccbb_cardbus_activate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
int ret;
ret = BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res);
if (ret != 0)
return (ret);
pccbb_cardbus_auto_open(device_get_softc(brdev), type);
return (0);
}
static int
pccbb_cardbus_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
int ret;
ret = BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res);
if (ret != 0)
return (ret);
pccbb_cardbus_auto_open(device_get_softc(brdev), type);
return (0);
}
static struct resource *
pccbb_cardbus_alloc_resource(device_t brdev, device_t child, int type,
int *rid, u_long start, u_long end, u_long count, uint flags)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int tmp;
struct resource *res;
switch (type) {
case SYS_RES_IRQ:
tmp = rman_get_start(sc->irq_res);
if (start > tmp || end < tmp || count != 1) {
device_printf(child, "requested interrupt %ld-%ld,"
"count = %ld not supported by pccbb\n",
start, end, count);
return (NULL);
}
start = end = tmp;
break;
case SYS_RES_IOPORT:
if (start <= pccbb_start_32_io)
start = pccbb_start_32_io;
if (end < start)
end = start;
break;
case SYS_RES_MEMORY:
if (start <= pccbb_start_mem)
start = pccbb_start_mem;
if (end < start)
end = start;
break;
}
res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
start, end, count, flags & ~RF_ACTIVE);
if (res == NULL) {
printf("pccbb alloc res fail\n");
return (NULL);
}
pccbb_insert_res(sc, res, type, *rid);
if (flags & RF_ACTIVE)
if (bus_activate_resource(child, type, *rid, res) != 0) {
bus_release_resource(child, type, *rid, res);
return (NULL);
}
return (res);
}
static int
pccbb_cardbus_release_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int error;
if (rman_get_flags(res) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, res);
if (error != 0)
return (error);
}
pccbb_remove_res(sc, res);
return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
/************************************************************************/
/* PC Card Power Functions */
/************************************************************************/
static int
pccbb_pcic_power_enable_socket(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int err;
DPRINTF(("pccbb_pcic_socket_enable:\n"));
/* power down/up the socket to reset */
err = pccbb_do_power(brdev);
if (err)
return (err);
exca_reset(&sc->exca, child);
return (0);
}
static void
pccbb_pcic_power_disable_socket(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
DPRINTF(("pccbb_pcic_socket_disable\n"));
/* reset signal asserting... */
exca_clrb(&sc->exca, EXCA_INTR, EXCA_INTR_RESET);
DELAY(2*1000);
/* power down the socket */
pccbb_power(brdev, CARD_VCC_0V | CARD_VPP_0V);
exca_clrb(&sc->exca, EXCA_PWRCTL, EXCA_PWRCTL_OE);
/* wait 300ms until power fails (Tpf). */
DELAY(300 * 1000);
}
/************************************************************************/
/* POWER methods */
/************************************************************************/
static int
pccbb_power_enable_socket(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
return (pccbb_pcic_power_enable_socket(brdev, child));
else
return (pccbb_cardbus_power_enable_socket(brdev, child));
}
static void
pccbb_power_disable_socket(device_t brdev, device_t child)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
pccbb_pcic_power_disable_socket(brdev, child);
else
pccbb_cardbus_power_disable_socket(brdev, child);
}
static int
pccbb_pcic_activate_resource(device_t brdev, device_t child, int type, int rid,
struct resource *res)
{
int err;
struct pccbb_softc *sc = device_get_softc(brdev);
if (!(rman_get_flags(res) & RF_ACTIVE)) { /* not already activated */
switch (type) {
case SYS_RES_IOPORT:
err = exca_io_map(&sc->exca, 0, res);
break;
case SYS_RES_MEMORY:
err = exca_mem_map(&sc->exca, 0, res);
break;
default:
err = 0;
break;
}
if (err)
return (err);
}
return (BUS_ACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
static int
pccbb_pcic_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (rman_get_flags(res) & RF_ACTIVE) { /* if activated */
switch (type) {
case SYS_RES_IOPORT:
if (exca_io_unmap_res(&sc->exca, res))
return (ENOENT);
break;
case SYS_RES_MEMORY:
if (exca_mem_unmap_res(&sc->exca, res))
return (ENOENT);
break;
}
}
return (BUS_DEACTIVATE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
static struct resource *
pccbb_pcic_alloc_resource(device_t brdev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, uint flags)
{
struct resource *res = NULL;
struct pccbb_softc *sc = device_get_softc(brdev);
int tmp;
switch (type) {
case SYS_RES_MEMORY:
if (start < pccbb_start_mem)
start = pccbb_start_mem;
if (end < start)
end = start;
flags = (flags & ~RF_ALIGNMENT_MASK) |
rman_make_alignment_flags(CBB_MEMALIGN);
break;
case SYS_RES_IOPORT:
if (start < pccbb_start_16_io)
start = pccbb_start_16_io;
if (end < start)
end = start;
break;
case SYS_RES_IRQ:
tmp = rman_get_start(sc->irq_res);
if (start > tmp || end < tmp || count != 1) {
device_printf(child, "requested interrupt %ld-%ld,"
"count = %ld not supported by pccbb\n",
start, end, count);
return (NULL);
}
flags |= RF_SHAREABLE;
start = end = rman_get_start(sc->irq_res);
break;
}
res = BUS_ALLOC_RESOURCE(device_get_parent(brdev), child, type, rid,
start, end, count, flags & ~RF_ACTIVE);
if (res == NULL)
return (NULL);
pccbb_insert_res(sc, res, type, *rid);
if (flags & RF_ACTIVE) {
if (bus_activate_resource(child, type, *rid, res) != 0) {
bus_release_resource(child, type, *rid, res);
return (NULL);
}
}
return (res);
}
static int
pccbb_pcic_release_resource(device_t brdev, device_t child, int type,
int rid, struct resource *res)
{
struct pccbb_softc *sc = device_get_softc(brdev);
int error;
if (rman_get_flags(res) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, res);
if (error != 0)
return (error);
}
pccbb_remove_res(sc, res);
return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
/************************************************************************/
/* PC Card methods */
/************************************************************************/
static int
pccbb_pcic_set_res_flags(device_t brdev, device_t child, int type, int rid,
uint32_t flags)
{
struct pccbb_softc *sc = device_get_softc(brdev);
struct resource *res;
if (type != SYS_RES_MEMORY)
return (EINVAL);
res = pccbb_find_res(sc, type, rid);
if (res == NULL) {
device_printf(brdev,
"set_res_flags: specified rid not found\n");
return (ENOENT);
}
return (exca_mem_set_flags(&sc->exca, res, flags));
}
static int
pccbb_pcic_set_memory_offset(device_t brdev, device_t child, int rid,
uint32_t cardaddr, uint32_t *deltap)
{
struct pccbb_softc *sc = device_get_softc(brdev);
struct resource *res;
res = pccbb_find_res(sc, SYS_RES_MEMORY, rid);
if (res == NULL) {
device_printf(brdev,
"set_memory_offset: specified rid not found\n");
return (ENOENT);
}
return (exca_mem_set_offset(&sc->exca, res, cardaddr, deltap));
}
/************************************************************************/
/* BUS Methods */
/************************************************************************/
static int
pccbb_activate_resource(device_t brdev, device_t child, int type, int rid,
struct resource *r)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
return (pccbb_pcic_activate_resource(brdev, child, type, rid, r));
else
return (pccbb_cardbus_activate_resource(brdev, child, type, rid,
r));
}
static int
pccbb_deactivate_resource(device_t brdev, device_t child, int type,
int rid, struct resource *r)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
return (pccbb_pcic_deactivate_resource(brdev, child, type,
rid, r));
else
return (pccbb_cardbus_deactivate_resource(brdev, child, type,
rid, r));
}
static struct resource *
pccbb_alloc_resource(device_t brdev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, uint flags)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
return (pccbb_pcic_alloc_resource(brdev, child, type, rid,
start, end, count, flags));
else
return (pccbb_cardbus_alloc_resource(brdev, child, type, rid,
start, end, count, flags));
}
static int
pccbb_release_resource(device_t brdev, device_t child, int type, int rid,
struct resource *r)
{
struct pccbb_softc *sc = device_get_softc(brdev);
if (sc->flags & PCCBB_16BIT_CARD)
return (pccbb_pcic_release_resource(brdev, child, type,
rid, r));
else
return (pccbb_cardbus_release_resource(brdev, child, type,
rid, r));
}
static int
pccbb_read_ivar(device_t brdev, device_t child, int which, uintptr_t *result)
{
struct pccbb_softc *sc = device_get_softc(brdev);
switch (which) {
case PCIB_IVAR_BUS:
*result = sc->secbus;
return (0);
}
return (ENOENT);
}
static int
pccbb_write_ivar(device_t brdev, device_t child, int which, uintptr_t value)
{
struct pccbb_softc *sc = device_get_softc(brdev);
switch (which) {
case PCIB_IVAR_BUS:
sc->secbus = value;
break;
}
return (ENOENT);
}
/************************************************************************/
/* PCI compat methods */
/************************************************************************/
static int
pccbb_maxslots(device_t brdev)
{
return (0);
}
static uint32_t
pccbb_read_config(device_t brdev, int b, int s, int f, int reg, int width)
{
/*
* Pass through to the next ppb up the chain (i.e. our grandparent).
*/
return (PCIB_READ_CONFIG(device_get_parent(device_get_parent(brdev)),
b, s, f, reg, width));
}
static void
pccbb_write_config(device_t brdev, int b, int s, int f, int reg, uint32_t val,
int width)
{
/*
* Pass through to the next ppb up the chain (i.e. our grandparent).
*/
PCIB_WRITE_CONFIG(device_get_parent(device_get_parent(brdev)),
b, s, f, reg, val, width);
}
static int
pccbb_suspend(device_t self)
{
int error = 0;
struct pccbb_softc* sc = device_get_softc(self);
bus_teardown_intr(self, sc->irq_res, sc->intrhand);
error = bus_generic_suspend(self);
return (error);
}
static int
pccbb_resume(device_t self)
{
int error = 0;
struct pccbb_softc *sc = (struct pccbb_softc *)device_get_softc(self);
uint32_t tmp;
pci_write_config(self, CBBR_SOCKBASE, rman_get_start(sc->base_res), 4);
DEVPRINTF((self, "PCI Memory allocated: %08lx\n",
rman_get_start(sc->base_res)));
pccbb_chipinit(sc);
/* re-establish the interrupt. */
if (bus_setup_intr(self, sc->irq_res, INTR_TYPE_AV, pccbb_intr, sc,
&sc->intrhand)) {
device_printf(self, "couldn't re-establish interrupt");
bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res);
bus_release_resource(self, SYS_RES_MEMORY, CBBR_SOCKBASE,
sc->base_res);
sc->irq_res = NULL;
sc->base_res = NULL;
return (ENOMEM);
}
/* CSC Interrupt: Card detect interrupt on */
pccbb_setb(sc, CBB_SOCKET_MASK, CBB_SOCKET_MASK_CD);
/* reset interrupt */
tmp = pccbb_get(sc, CBB_SOCKET_EVENT);
pccbb_set(sc, CBB_SOCKET_EVENT, tmp);
/*
* Some BIOSes will not save the BARs for the pci chips, so we
* must do it ourselves. If the BAR is reset to 0 for an I/O
* device, it will read back as 0x1, so no explicit test for
* memory devices are needed.
*
* Note: The PCI bus code should do this automatically for us on
* suspend/resume, but until it does, we have to cope.
*/
if (pci_read_config(self, CBBR_SOCKBASE, 4) == 0)
pci_write_config(self, CBBR_SOCKBASE,
rman_get_start(sc->base_res), 4);
error = bus_generic_resume(self);
return (error);
}
static device_method_t pccbb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, pccbb_probe),
DEVMETHOD(device_attach, pccbb_attach),
DEVMETHOD(device_detach, pccbb_detach),
DEVMETHOD(device_shutdown, pccbb_shutdown),
DEVMETHOD(device_suspend, pccbb_suspend),
DEVMETHOD(device_resume, pccbb_resume),
/* bus methods */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, pccbb_read_ivar),
DEVMETHOD(bus_write_ivar, pccbb_write_ivar),
DEVMETHOD(bus_alloc_resource, pccbb_alloc_resource),
DEVMETHOD(bus_release_resource, pccbb_release_resource),
DEVMETHOD(bus_activate_resource, pccbb_activate_resource),
DEVMETHOD(bus_deactivate_resource, pccbb_deactivate_resource),
DEVMETHOD(bus_driver_added, pccbb_driver_added),
DEVMETHOD(bus_child_detached, pccbb_child_detached),
DEVMETHOD(bus_setup_intr, pccbb_setup_intr),
DEVMETHOD(bus_teardown_intr, pccbb_teardown_intr),
/* 16-bit card interface */
DEVMETHOD(card_set_res_flags, pccbb_pcic_set_res_flags),
DEVMETHOD(card_set_memory_offset, pccbb_pcic_set_memory_offset),
DEVMETHOD(card_reprobe_card, pccbb_card_reprobe),
/* power interface */
DEVMETHOD(power_enable_socket, pccbb_power_enable_socket),
DEVMETHOD(power_disable_socket, pccbb_power_disable_socket),
/* pcib compatibility interface */
DEVMETHOD(pcib_maxslots, pccbb_maxslots),
DEVMETHOD(pcib_read_config, pccbb_read_config),
DEVMETHOD(pcib_write_config, pccbb_write_config),
{0,0}
};
static driver_t pccbb_driver = {
"pccbb",
pccbb_methods,
sizeof(struct pccbb_softc)
};
static devclass_t pccbb_devclass;
DRIVER_MODULE(pccbb, pci, pccbb_driver, pccbb_devclass, 0, 0);
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